A type alias to either std_result<T, E = std::error_code, NoValuePolicy = policy::default_policy<T, E, void>> (standalone edition) or boost_result<T, E = boost::system::error_code, NoValuePolicy = policy::default_policy<T, E, void>> (Boost edition), and policy::default_policy . This means that result<T> uses the appropriate default alias depending on which edition of Outcome is in use.

Namespace: BOOST_OUTCOME_V2_NAMESPACE

Header: <boost/outcome/result.hpp>